What are "tire performance characteristics"?
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To ensure effectiveness, tires need to deliver numerous, often conflicting, performance characteristics. Improving one of these performances must not be to the detriment of the others.
PERFORMANCE CHARACTERISTIC I SHOULD THINK ABOUT:
How do I choose between versions of a tire line?
Each of our tire lines is made in a selection of sizes to fit appropriate vehicles. Sometimes a tire line will have several versions of the same tire size but with different technical specifications such as speed ratings (ex: S, T, H, V, W, Y, etc.), load index (ex: 91, 94, XL, etc.), or OE markings (designating that a version was specifically designed for a vehicle manufacturer, ex: Star = BMW or Mini, MO = Mercedes, etc). These technical specifications are important details that can determine whether or not that version is compatible with your vehicle and the way you drive.
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If several versions are compatible with your vehicle, we recommend that you choose the version with the same specifications as your original equipment tires.
You can also safely select a version with higher speed rating or load index; however, higher speed or load capability can negatively impact tread life and ride comfort.